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02) TCBM4

Direct central pipe (remove the 2 original catalysts)

(For the installation on the original rear silencer it is necessary to separately order the adapter AD.BMWM4.01)

03) TCBM4.CAT

Central pipe + 2 KAT 100 CPSI (it replaces the originals catalysts)

(For the installation on the original rear silencer it is necessary to separately order the adapter AD.BMWM4.01)

04) AD.BMWM4.01

Adapter for the assembly of TCBM4 / TCBM4.CAT on the original rear silencer

06) VALV.BM4.01.XR90BLACK

Rear silencer with end pipe 2x diam. 90 X-RACE Black Edition R+L + Valves assembly with original electric engines (electric engines not included)